Does Capcom Still Has New Street Fighter X Tekken Challengers To Reveal?

Yesterday, Capcom confirmed M. Bison, Akuma, Ogre, and Jin for Street Fighter X Tekken, which brings the roster to 38 characters. While the press release said these are the "Final Four playable characters," producer Yoshinori Ono teased "No one is say ‘over’… hehehe~~," when a fan asked if there were no more characters to reveal on Twitter.

On closer inspection, Capcom called the roster so far "a launch line up" and yesterday’s announcement are the final "characters appearing at launch." Street Fighter X Tekken comes out on March 6. Perhaps, Capcom has future character announcements planned after that?